The free coding agent. No subscription. No configuration. Start in seconds.

An AI coding agent that runs in your terminal — describe what you want, and Freebuff edits your code.

npm install -g freebuff

cd ~/my-project
freebuff

Simple — No modes. No config. Just works.

Fast — 5–10× speed up. 3–5× tokens per second compared to Claude, plus context gathering in seconds.

Loaded — Built-in web research, browser use, and more.

Connect ChatGPT — Link your ChatGPT subscription for planning and review.

• File mentions — Use @filename to reference specific files
• Agent mentions — Use @AgentName to invoke specialized agents
• Bash mode — Run terminal commands with !command or /bash
• Chat history — Resume past conversations with /history
• Knowledge files — Add knowledge.md to your project for context
• Themes — Toggle light/dark mode with /theme:toggle

How can it be free? Freebuff is supported by ads shown in the CLI.

What models do you use? MiniMax M2.5 as the main coding agent, Gemini 3.1 Flash Lite for finding files and research, and GPT-5.4 for deep thinking if you connect your ChatGPT subscription.

Are you training on my data? No. We only use model providers that do not train on our requests. Your code stays yours.

What data do you store? We don't store your codebase. We only collect minimal logs for debugging purposes.

Freebuff connects to a cloud backend and uses models optimized for fast, high-quality assistance. Ads are shown to support the free tier.

freebuff/
├── cli/       # CLI build & npm release files
└── web/       # Freebuff website

# From the repo root
bun freebuff/cli/build.ts 1.0.0

• Documentation
• GitHub
• Website

Built on the Codebuff platform.

MIT